Homebrew PCBs

On Mon, 23 Jan 2006 13:56:06 +0100, Mike Young <mikewhy@...>  
wrote:

>
>
> Do they really have white toner? I would think any printing process is
>
> inherently subtractive, CMYK, rather than RGB. Except transparencies, of
>
> course, and even that wouldn't have white.
>
>
> How do color laserjets work? Is it a single pass?
>


I'm not aware of any white toner. As far as i know the only way to get  
white is ribbon type printers.

But i don't understand why it would be required to be white, black is  
perfectly fine and any other color would work too, apart from the color  
the PCB is, so yellow is possibly the worst choice and white doesn't  
really seem such a good idea either. Note that industrial boards use dark  
green soldermask - so white is good and black is bad, but for a bare PCB  
that is not true.

ST